X-FAST: A NEW XUV FEMTOSECOND ABSORPTION SPECTROSCOPY TABLETOP INSTRUMENT AT UW-MADISON

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https://hdl.handle.net/2142/122636

Title: X-FAST: A NEW XUV FEMTOSECOND ABSORPTION SPECTROSCOPY TABLETOP INSTRUMENT AT UW-MADISON
Author(s): Abhari, Zain
Issue Date: 2023-06-21
Keyword(s): Instrument/Technique Demonstration
Abstract: Core-level spectroscopies enable element specific measurements of electronic and vibrational dynamics on the fem-tosecond timescale. Advancements in the generation of XUV light through high harmonic generation (HHG) has opened the door to doing such measurements in-house; we are currently in the commissioning phase of the X-FAST instrument at the University of Wisconsin - Madison. Here, we describe the instrument and show the initial capabilities and studies carried out using the X-FAST instrument. The instrument is comprised of two paths, an optical pump in air and an XUV probe in vacuum. We used this system to carry out two preliminary experiments: a study of the kinetics and dynamics of transition-metal perovskite oxides, and a collection of static transient absorption spectra of a metallic shape-memory alloy, Ni₂MnGa.
Publisher: International Symposium on Molecular Spectroscopy
Type of Resource: Text
Language: eng
Handle URL: https://hdl.handle.net/2142/122636